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  18. 25 May, 2016 1 commit
    • Robbert Krebbers's avatar
      Tweak the algebraic hierarchy. · a3d0a338
      Robbert Krebbers authored
      - Make the carrier argument of the constructors for the canonical structures
        cofeT and cmraT explicit. This way we make sure the carrier is properly
        exposed, instead of some alias of the carrier.
      - Make derived constructions (such as discreteC and discreteR) notations
        instead of definitions. This is yet again to make sure that the carrier is
        properly exposed.
      - Turn DRA into a canonical structure (it used to be a type class).
      
      This fixes some issues, notably it fixes some broken rewrites in algebra/sts
      and it makes canonical structures work properly with dec_agree.
      a3d0a338
  19. 24 May, 2016 1 commit
    • Robbert Krebbers's avatar
      Merge iAssert and iPvsAssert. · e965b669
      Robbert Krebbers authored
      To do so, we have introduced the specialization patterns:
      
        =>[H1 .. Hn] and =>[-H1 .. Hn]
      
      That generate a goal in which the view shift is preserved. These specialization
      patterns can also be used for e.g. iApply.
      
      Note that this machinery is not tied to primitive view shifts, and works for
      various kinds of goal (as captured by the ToAssert type class, which describes
      how to transform the asserted goal based on the main goal).
      
      TODO: change the name of these specialization patterns to reflect this
      generality.
      e965b669